/*************************************************************************
	> File Name: demo2.c
	> Author: 
	> Mail: 
	> Created Time: 日 10/31 19:30:31 2021
 ************************************************************************/

#include<stdio.h>
int main() {
    int a;
    a = 1;
    a = a + 19;
    printf("%d", a);
    return 0;
}
